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# Unit 5: Logarithms

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## About this unit

Logarithms are the inverses of exponents. They allow us to solve hairy exponential equations, and they are a good excuse to dive deeper into the relationship between a function and its inverse.

### Learn

### Practice

- Evaluate logarithmsGet 3 of 4 questions to level up!
- Evaluate logarithms (advanced)Get 3 of 4 questions to level up!
- Relationship between exponentials & logarithmsGet 3 of 4 questions to level up!

### Learn

### Practice

- Use the properties of logarithmsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Evaluate logarithms: change of base ruleGet 3 of 4 questions to level up!
- Use the logarithm change of base ruleGet 3 of 4 questions to level up!

### Learn

### Practice

- Solve exponential equations using logarithms: base-10 and base-eGet 3 of 4 questions to level up!
- Solve exponential equations using logarithms: base-2 and other basesGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

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Level up on all the skills in this unit and collect up to 900 Mastery points!